<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../js/vue.js"></script>
</head>
<body>
    <!-- 准备好一个容器-->
    <div id="root">
        <h1>学校信息</h1>
        <h2>学校名称：{{school.name}}</h2>
        <h2>学校地址：{{school.address}}</h2>
        <h2>校长是：{{school.leader}}</h2>
        <hr/>
        <h1>学生信息</h1>
        <button @click="addSex">添加一个性别属性，默认值是男</button>
        <h2>姓名：{{student.name}}</h2>
        <h2 v-if="student.sex">性别：{{student.sex}}</h2>
        <h2>年龄：真实{{student.age.rAge}}，对外{{student.age.sAge}}</h2>
        <h2>朋友们</h2>
        <ul>
            <li v-for="(f,index) in student.friends" :key="index">
                {{f.name}}--{{f.age}}
            </li>
        </ul>
    </div>
</body>
<script>
    Vue.config.productionTip = false //阻止 vue 在启动时生成生产提示。

    const vm = new Vue({
        el:'#root',
        data:{
            school:{
                name:'尚硅谷',
                address:'北京',
            },
            student:{
                name:'tom',
                age:{
                    rAge:40,
                    sAge:29,
                },
                friends:[
                    {name:'jerry',age:35},
                    {name:'tony',age:36}
                ]
            }
        },
        methods: {
            addSex(){
                // Vue.set(this.student,'sex','男')
                this.$set(this.student,'sex','男')
            }
        }
    })

</script>
</html>